Nortel DMS-100 Series Reference Manual page 475

Remote Switching Center Multi-access (RSC-M)
A standard DMS 28 in. cabinet contains RSC-Ms. A standard DMS 28 28
in. cabinet contains a maximum of four shelves. The line group controller
supports groups of main and extension (EXT) shelves. The minimum
configuration requires one main shelf.
The RSC-M channel capacity appears in the following table.
Channel capacity
Entity
C-side links
C-side channels
P-side links
P-side channels
The system logically maps each PCM30 virtual line channel to a specified
private branch exchange (PBX), or subscriber line that a line card in the
AMC supports. At the DMS switch, each virtual line is entered as a line of
the appropriate type. Physical line information is entered at the AMC and
correlated with the virtual line information in the DMS switch.
The RSC-M PM is entered in table remote cluster controller inventory
(RCCINV) as RCO2. Each virtual line is assigned to a logical slot in table
line inventory (LNINV). The RSC-M unit supports 1380 lines with a
half-shelf EXT. The RSC-M unit cannot contain data like an LCM. An
LCM has a maximum capacity of 640 lines. Each RSC-M unit has
associated virtual line modules in table RSC-M translate (GPPTRNSL). The
LNINV entry for a given virtual line includes a reference to the RSC-M line
module to which the entry belongs. A line module is present for carrier
groups 0–15, 16–31, 32–47, and the lines that the groups support.
On the C-side, each RSC-M shelf can connect to a Line Group
Controller Overseas (LGCOi+) host peripheral. The LGCOi+ is entered
as a PCM30 Line Group Controller (PLGC). One LGCOi+ supports a
maximum of two RSC-M main and extension shelves.
On the P-side, an RSC-M shelf supports a maximum of 46 PCM30 links
that support a maximum of 1380 CAS lines. An RSC-M main shelf can
support a maximum of 22 PCM30 links. Each half EXT shelf can
support an additional 24 PCM30 links. Use links 22 and 23 for
maintenance.
Interface
PCM30 links
64 Kb/s channels
PCM30 links
64 Kb/s channels
DMS-100 Family XPM International Translations Reference Manual, ISN06 (TDM)
Datafilling Remote Switching Center Multi-Access 5-15
Main shelf EXT shelf
16 0
480 0
22 24
660 720
(continued)
Maximum
Main & Extension
16
480
46
1380